1301213233 has 4 divisors (see below), whose sum is σ = 1369698160. Its totient is φ = 1232728308.

The previous prime is 1301213227. The next prime is 1301213257. The reversal of 1301213233 is 3323121031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301213233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 68484907 = 1301213233 / (1 + 3 + 0 + 1 + 2 + 1 + 3 + 2 + 3 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1301213233.

It is not an unprimeable number, because it can be changed into a prime (1301213033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34242435 + ... + 34242472.

It is an arithmetic number, because the mean of its divisors is an integer number (342424540).

Almost surely, 2^1301213233 is an apocalyptic number.

It is an amenable number.

1301213233 is a deficient number, since it is larger than the sum of its proper divisors (68484927).

1301213233 is an equidigital number, since it uses as much as digits as its factorization.

1301213233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68484926.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1301213233 is about 36072.3333456543. Note that the first 4 decimals coincide. The cubic root of 1301213233 is about 1091.7322938720.

Adding to 1301213233 its reverse (3323121031), we get a palindrome (4624334264).

The spelling of 1301213233 in words is "one billion, three hundred one million, two hundred thirteen thousand, two hundred thirty-three".